PLEASE NOTE: Public works projects (construction) are not included on this page. For bid information including planholder lists on public works projects, please contact ENGINEERING SERVICES at 925-756-1900 or check the Projects page of this website.

Bids and Requests for Proposal

Delta Diablo (District) uses Periscope (formerly BidSync)  for most non-public works bids and RFP's.  Please register here and you will automatically be notified of upcoming opportunities. 

Purchasing Contact Information 
Delta Diablo 
Purchasing Division 
2500 Pittsburg-Antioch Hwy 
Antioch, CA 94509 
925.756.1968 
purchasing@deltadiablo.org